Malicious PDF — malware analysis report

Static analysis result for SHA-256 72269c448e23faeb…

MALICIOUS

PDF

76.3 KB Created: 2021-02-07 20:21:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f83e53670e5b5db0f20878fcb371261c SHA-1: 282e22eb187ee96e7e6bfc428176fb4eb4819c2f SHA-256: 72269c448e23faeb045eb8b4a7568b7c151aa44dbdf3624f0b46972713372b44
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains and identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/123?utm_term=arcadia+capella+pdf PDF link annotation
    • http://nosinoski.shop/518001721639vufm.pdfIn PDF document text
    • https://cdn.sqhk.co/fowurona/galhO6u/97110340737.pdfIn PDF document text
    • http://vipmanmarket.space/38716419911ql7yo.pdfIn PDF document text
    • http://afracheat4.xyz/929716792310xths.pdfIn PDF document text
    • https://cdn.sqhk.co/gizivapejoko/qjdjdyL/36337948215.pdfIn PDF document text
    • http://daddytestit.xyz/world_beautiful_girl_hd_wallpaper4l5vt.pdfIn PDF document text
    • http://bullbananavannaone.xyz/53770517352sxnwd.pdfIn PDF document text
    • http://dostafood.xyz/rorabefefn4t1q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417314/normal_6002764a95a79.pdfIn PDF document text
    • https://cdn.sqhk.co/biposuba/tgmjior/21596787506.pdfIn PDF document text
    • http://tumbaa.space/katuvapcrwlb.pdfIn PDF document text
    • https://cdn.sqhk.co/dozumapufa/ahf0CN0/76650263455.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://texatopewewew.epizy.com/xedumedigu.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/ganedawonok.pdfIn PDF document text
    • http://wipapirub.epizy.com/teeth_arrangement_in_complete_dentures.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/33813953969.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/loresud.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/fukirelanadivifa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE579 4960 bytes
SHA-256: 92936697c66cf68a1673c15ef0cdfe6f25944050d033526f15360bd7c50d23c8
font_01_sfnt_off0000f66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66E 14716 bytes
SHA-256: 4676f8f65779d0691941e00b8fa0d94f2ec3809b2f850188a8351b3e7df1d1a1

Open this report in the interactive analyzer, or submit your own file for analysis.